Our SMART website may be unavailable for a few minutes on July 1st 2025 between 11:00 and 11:30 AM due to an IT update

We would like to inform you that we are rebranding our SMART website from GRTgaz to NaTran on July 1st, 2025 at 11:00 AM.

We are replacing the word GRTgaz with the word NaTran in many places on our SMART website, which notably impacts Excel exports. Certain cell contents in CSV and XLS files, such as zone selection names, are affected, as are column headings and sheet names.

The URLs/APIs to be used are smart.natrangroupe.com, although the current URLs/APIs smart.grtgaz.com will remain valid temporarily.

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Sum of shipper send-out nominations for D+1, per balancing zone : This data corresponds to aggregated shipper send-out nominations in kWh 25°C at the interface between the LSO and the TSO. This information is provided at 18h00 LT for the gas day ahead.* *These data are given by the LNG terminal operator. NaTran is not liable for such data.

Sum of shipper send-out allocations for D-1, per balancing zone : This data corresponds to aggregated shipper send-out allocations in kWh 25°C at the interface between the LSO and the TSO. This information is provided at 7h00 LT for the preceding gas day.* *These data are given by the LNG terminal operator. NaTran is not liable for such data.

LNG inventory at the beginning of the gas day (10³.m³ LNG) : This data corresponds to the total amount of LNG in the tanks of the LNG terminals operated by Elengy and Fosmax-LNG for the concerned balancing zone (North or South) at the beginning of a gas day, expressed in thousand cubic meters of LNG.* *The data published on this page are given by the LNG terminal operators. NaTran is not liable for such data.

Aggregate daily gas levels in LNG terminals, per balancing zone : This data corresponds to the total amount of gas in kWh 25°C belonged by the shippers in the tanks of the LNG terminal at the end of the gas day.* *These data are given by the LNG terminal operator. NaTran is not liable for such data.

Total monthly LNG facility capacity : This data corresponds to the full commercial capacity of the LNG terminal, including the already subscribed one, expressed in kWh/J at 25°C. This information is provided at 18h00 LT for the coming months or years until the commercial end of the LNG terminal.* *These data are given by the LNG terminal operator. NaTran is not liable for such data.

Available monthly LNG facility capacity : This data corresponds to the full commercial capacity of the LNG terminal after deducting all the existing client subscriptions, expressed in kWh/J at 25°C. This information is provided at 18h00 LT for the coming months or years until the commercial end of the LNG terminal.* *These data are given by the LNG terminal operator. NaTran is not liable for such data.